这个词是什么意思？
ELECTROMAGNETIC RADIATION or particle radiation (high energy ELEMENTARY PARTICLES) capable of directly or indirectly producing IONS in its passage through matter. The wavelengths of ionizing electromagnetic radiation are equal to or smaller than those of short (far) ultraviolet radiation and include gamma and X-rays.
中文名称索引；定义为 MeSH 英文原文，尚未逐条译审。MESH:D011839 · MeSH 2026。
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